1 code implementation • IEEE Transactions on Cybernetics 2019 • Van Loi Cao, Miguel Nicolau, and James McDermott
Our approach is to introduce new regularizers to a classical autoencoder (AE) and a variational AE, which force normal data into a very tight area centered at the origin in the nonsaturating area of the bottleneck unit activations.
no code implementations • 31 Jan 2018 • Nga Nguyen Thi, Van Loi Cao, Nhien-An Le-Khac
Instead of considering each time-step separately, the observation of prediction errors from a certain number of time-steps is now proposed as a new idea for detecting collective anomalies.
no code implementations • 11 Apr 2017 • Van Loi Cao, Nhien-An Le-Khac, Miguel Nicolau, Michael ONeill, James McDermott
We examine two fitness functions from previous studies and develop two new fitness functions to evolve GP classifier with superior accuracy on the minority class and overall.
no code implementations • 28 Mar 2017 • Loic Bontemps, Van Loi Cao, James McDermott, Nhien-An Le-Khac
Most of the cur- rent research on anomaly detection is based on the learning of normally and anomaly behaviors.